String issue

Hi I am having a problem with inserting a decimal point into a string.

Okay here it goes,

I am writing to an LCD display and I am having trouble converting a number to be displayed. For example, I have an integer that ranges from 1 to 9999 I need to display this integer in string format with a decimal point before the last character so 1 would be ' '' '' ''.''1' and 9999 would be '9''9''9''.''9' . Currently I have code that takes the number to string format directly but how do I add the decimal point and spaces to the left of the string to make sure it is printed correctly?

Thanks
Chris

If you have four characters, and you want to turn it into five, you could do something like this:
[1] -> [1]
[2] -> [2]
[3] -> [3]
"." -> [4]
[4] -> [5]
But maybe I'm not understanding the question.

If you already have the number in a std::string, then try something like this:

Code:

---

void addDec(std::string &s)
{
    s.insert(s.length()-1, 1, '.');
}

---

If you're using a char * instead of std::string, the code would be somewhat similar.

Edit: Fixed idiocy in code.